AOZ3045PI

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AOZ3045PI Application Field and Working Principle

AOZ3045PI is a DC-DC switching regulator manufactured by Alpha and Omega Semiconductor. It belongs to the PMIC Voltage Regulators range, specifically in the DC DC switching regulators category. This product is a low input voltage, high output current and high efficiency DC-DC switching regulator solution with optimal stability and diagnostics features.

The AOZ3045PI is suitable for applications with input voltage levels up to 36V and output voltage levels up to 18V. It provides very high efficiency up to 96.5%, low quiescent current and low shutdown current. It also combines protection features such as over-voltage protection (OVP), over-current protection (OCP), and short circuit protection (SCP). In addition, the device is capable of predicting any fault condition such as output over-voltage and over-current.

Working Principle

On the working principle side, the AOZ3045PI is a constant frequency, current mode, DC-DC switching regulator that operates with a fixed frequency of up to 375KHz. It features a voltage mode control with a continuous conduction mode (CCM) in the output to provide exact regulation of the output voltage.

There is an internal power switch with a power MOSFET to control the output voltage. The integrated current limit, as one of its major features, is set by the external resistor connected to COMP pin and the external resistor connected to FB pin. The output voltage is set by the feedback voltage connected to FB pin.

The AOZ3045PI provides very accurate regulation and stability by its patented technique called ‘MEM’, which utilizes a switching waveform at high frequency combined with inductor saturation. This permits a fast response to changes in load and input voltage without compromising transient performance.

Overall Advantages

The AOZ3045PI is an efficient, reliable and cost-effective solution for general purpose DC-DC applications. It is optimized for a wide range of mobile and consumer electronics applications such as small appliances, computers, TVs, and other devices.

The four main advantages of the AOZ3045PI are its wide input voltage range, fast start-up time, high peak current capability, and low no-load power consumption. The wide input voltage range of up to 36V makes it suitable for any kind of input power, while its fast start-up time and high peak current capability ensure it can handle even the most demanding applications. Finally, its low no-load power consumption makes the device very power efficient.

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